2 * (C) Copyright 2000-2013
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * Copyright 2011 Freescale Semiconductor, Inc.
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 * Support for persistent environment data
32 * The "environment" is stored on external storage as a list of '\0'
33 * terminated "name=value" strings. The end of the list is marked by
34 * a double '\0'. The environment is preceeded by a 32 bit CRC over
35 * the data part and, in case of redundant environment, a byte of
38 * This linearized representation will also be used before
39 * relocation, i. e. as long as we don't have a full C runtime
40 * environment. After that, we use a hash table.
45 #include <environment.h>
50 #include <linux/stddef.h>
51 #include <asm/byteorder.h>
53 DECLARE_GLOBAL_DATA_PTR;
55 #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
56 !defined(CONFIG_ENV_IS_IN_FLASH) && \
57 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
58 !defined(CONFIG_ENV_IS_IN_MMC) && \
59 !defined(CONFIG_ENV_IS_IN_FAT) && \
60 !defined(CONFIG_ENV_IS_IN_NAND) && \
61 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
62 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
63 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
64 !defined(CONFIG_ENV_IS_IN_REMOTE) && \
65 !defined(CONFIG_ENV_IS_IN_UBI) && \
66 !defined(CONFIG_ENV_IS_NOWHERE)
67 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
68 SPI_FLASH|NVRAM|MMC|FAT|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
72 * Maximum expected input data size for import command
74 #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
77 * This variable is incremented on each do_env_set(), so it can
78 * be used via get_env_id() as an indication, if the environment
79 * has changed or not. So it is possible to reread an environment
80 * variable only if the environment was changed ... done so for
81 * example in NetInitLoop()
83 static int env_id = 1;
90 #ifndef CONFIG_SPL_BUILD
92 * Command interface: print one or all environment variables
94 * Returns 0 in case of error, or length of printed string
96 static int env_print(char *name, int flag)
101 if (name) { /* print a single name */
106 hsearch_r(e, FIND, &ep, &env_htab, flag);
109 len = printf("%s=%s\n", ep->key, ep->data);
113 /* print whole list */
114 len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
122 /* should never happen */
123 printf("## Error: cannot export environment\n");
127 static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
132 int env_flag = H_HIDE_DOT;
134 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
137 env_flag &= ~H_HIDE_DOT;
141 /* print all env vars */
142 rcode = env_print(NULL, env_flag);
145 printf("\nEnvironment size: %d/%ld bytes\n",
146 rcode, (ulong)ENV_SIZE);
150 /* print selected env vars */
151 env_flag &= ~H_HIDE_DOT;
152 for (i = 1; i < argc; ++i) {
153 int rc = env_print(argv[i], env_flag);
155 printf("## Error: \"%s\" not defined\n", argv[i]);
163 #ifdef CONFIG_CMD_GREPENV
164 static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
165 int argc, char * const argv[])
171 return CMD_RET_USAGE;
173 len = hexport_r(&env_htab, '\n',
174 flag | H_MATCH_BOTH | H_MATCH_SUBSTR,
175 &res, 0, argc, argv);
188 #endif /* CONFIG_SPL_BUILD */
191 * Set a new environment variable,
192 * or replace or delete an existing one.
194 static int _do_env_set(int flag, int argc, char * const argv[])
197 char *name, *value, *s;
199 int env_flag = H_INTERACTIVE;
201 debug("Initial value for argc=%d\n", argc);
202 while (argc > 1 && **(argv + 1) == '-') {
208 case 'f': /* force */
212 return CMD_RET_USAGE;
216 debug("Final value for argc=%d\n", argc);
220 if (strchr(name, '=')) {
221 printf("## Error: illegal character '='"
222 "in variable name \"%s\"\n", name);
229 if (argc < 3 || argv[2] == NULL) {
230 int rc = hdelete_r(name, &env_htab, env_flag);
235 * Insert / replace new value
237 for (i = 2, len = 0; i < argc; ++i)
238 len += strlen(argv[i]) + 1;
242 printf("## Can't malloc %d bytes\n", len);
245 for (i = 2, s = value; i < argc; ++i) {
248 while ((*s++ = *v++) != '\0')
257 hsearch_r(e, ENTER, &ep, &env_htab, env_flag);
260 printf("## Error inserting \"%s\" variable, errno=%d\n",
268 int setenv(const char *varname, const char *varvalue)
270 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
272 /* before import into hashtable */
273 if (!(gd->flags & GD_FLG_ENV_READY))
276 if (varvalue == NULL || varvalue[0] == '\0')
277 return _do_env_set(0, 2, (char * const *)argv);
279 return _do_env_set(0, 3, (char * const *)argv);
283 * Set an environment variable to an integer value
285 * @param varname Environmet variable to set
286 * @param value Value to set it to
287 * @return 0 if ok, 1 on error
289 int setenv_ulong(const char *varname, ulong value)
291 /* TODO: this should be unsigned */
292 char *str = simple_itoa(value);
294 return setenv(varname, str);
298 * Set an environment variable to an value in hex
300 * @param varname Environmet variable to set
301 * @param value Value to set it to
302 * @return 0 if ok, 1 on error
304 int setenv_hex(const char *varname, ulong value)
308 sprintf(str, "%lx", value);
309 return setenv(varname, str);
312 ulong getenv_hex(const char *varname, ulong default_val)
320 value = simple_strtoul(s, &endp, 16);
327 #ifndef CONFIG_SPL_BUILD
328 static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
331 return CMD_RET_USAGE;
333 return _do_env_set(flag, argc, argv);
337 * Prompt for environment variable
339 #if defined(CONFIG_CMD_ASKENV)
340 int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
342 char message[CONFIG_SYS_CBSIZE];
343 int i, len, pos, size;
347 local_args[0] = argv[0];
348 local_args[1] = argv[1];
349 local_args[2] = NULL;
350 local_args[3] = NULL;
355 * env_ask envname [message1 ...] [size]
358 return CMD_RET_USAGE;
361 * We test the last argument if it can be converted
362 * into a decimal number. If yes, we assume it's
363 * the size. Otherwise we echo it as part of the
366 i = simple_strtoul(argv[argc - 1], &endptr, 10);
367 if (*endptr != '\0') { /* no size */
368 size = CONFIG_SYS_CBSIZE - 1;
369 } else { /* size given */
375 sprintf(message, "Please enter '%s': ", argv[1]);
377 /* env_ask envname message1 ... messagen [size] */
378 for (i = 2, pos = 0; i < argc; i++) {
380 message[pos++] = ' ';
382 strcpy(message + pos, argv[i]);
383 pos += strlen(argv[i]);
385 message[pos++] = ' ';
389 if (size >= CONFIG_SYS_CBSIZE)
390 size = CONFIG_SYS_CBSIZE - 1;
395 /* prompt for input */
396 len = readline(message);
399 console_buffer[size] = '\0';
402 if (console_buffer[0] != '\0') {
403 local_args[2] = console_buffer;
407 /* Continue calling setenv code */
408 return _do_env_set(flag, len, local_args);
412 #if defined(CONFIG_CMD_ENV_CALLBACK)
413 static int print_static_binding(const char *var_name, const char *callback_name)
415 printf("\t%-20s %-20s\n", var_name, callback_name);
420 static int print_active_callback(ENTRY *entry)
422 struct env_clbk_tbl *clbkp;
426 if (entry->callback == NULL)
429 /* look up the callback in the linker-list */
430 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
431 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
434 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
435 if (entry->callback == clbkp->callback + gd->reloc_off)
437 if (entry->callback == clbkp->callback)
442 if (i == num_callbacks)
443 /* this should probably never happen, but just in case... */
444 printf("\t%-20s %p\n", entry->key, entry->callback);
446 printf("\t%-20s %-20s\n", entry->key, clbkp->name);
452 * Print the callbacks available and what they are bound to
454 int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
456 struct env_clbk_tbl *clbkp;
460 /* Print the available callbacks */
461 puts("Available callbacks:\n");
462 puts("\tCallback Name\n");
463 puts("\t-------------\n");
464 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
465 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
468 printf("\t%s\n", clbkp->name);
471 /* Print the static bindings that may exist */
472 puts("Static callback bindings:\n");
473 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
474 printf("\t%-20s %-20s\n", "-------------", "-------------");
475 env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding);
478 /* walk through each variable and print the callback if it has one */
479 puts("Active callback bindings:\n");
480 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
481 printf("\t%-20s %-20s\n", "-------------", "-------------");
482 hwalk_r(&env_htab, print_active_callback);
487 #if defined(CONFIG_CMD_ENV_FLAGS)
488 static int print_static_flags(const char *var_name, const char *flags)
490 enum env_flags_vartype type = env_flags_parse_vartype(flags);
491 enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
493 printf("\t%-20s %-20s %-20s\n", var_name,
494 env_flags_get_vartype_name(type),
495 env_flags_get_varaccess_name(access));
500 static int print_active_flags(ENTRY *entry)
502 enum env_flags_vartype type;
503 enum env_flags_varaccess access;
505 if (entry->flags == 0)
508 type = (enum env_flags_vartype)
509 (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
510 access = env_flags_parse_varaccess_from_binflags(entry->flags);
511 printf("\t%-20s %-20s %-20s\n", entry->key,
512 env_flags_get_vartype_name(type),
513 env_flags_get_varaccess_name(access));
519 * Print the flags available and what variables have flags
521 int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
523 /* Print the available variable types */
524 printf("Available variable type flags (position %d):\n",
525 ENV_FLAGS_VARTYPE_LOC);
526 puts("\tFlag\tVariable Type Name\n");
527 puts("\t----\t------------------\n");
528 env_flags_print_vartypes();
531 /* Print the available variable access types */
532 printf("Available variable access flags (position %d):\n",
533 ENV_FLAGS_VARACCESS_LOC);
534 puts("\tFlag\tVariable Access Name\n");
535 puts("\t----\t--------------------\n");
536 env_flags_print_varaccess();
539 /* Print the static flags that may exist */
540 puts("Static flags:\n");
541 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
543 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
545 env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags);
548 /* walk through each variable and print the flags if non-default */
549 puts("Active flags:\n");
550 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
552 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
554 hwalk_r(&env_htab, print_active_flags);
560 * Interactively edit an environment variable
562 #if defined(CONFIG_CMD_EDITENV)
563 static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
566 char buffer[CONFIG_SYS_CBSIZE];
570 return CMD_RET_USAGE;
572 /* Set read buffer to initial value or empty sting */
573 init_val = getenv(argv[1]);
575 sprintf(buffer, "%s", init_val);
579 if (readline_into_buffer("edit: ", buffer, 0) < 0)
582 return setenv(argv[1], buffer);
584 #endif /* CONFIG_CMD_EDITENV */
585 #endif /* CONFIG_SPL_BUILD */
588 * Look up variable from environment,
589 * return address of storage for that variable,
590 * or NULL if not found
592 char *getenv(const char *name)
594 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
601 hsearch_r(e, FIND, &ep, &env_htab, 0);
603 return ep ? ep->data : NULL;
606 /* restricted capabilities before import */
607 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
608 return (char *)(gd->env_buf);
614 * Look up variable from environment for restricted C runtime env.
616 int getenv_f(const char *name, char *buf, unsigned len)
620 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
623 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
624 if (nxt >= CONFIG_ENV_SIZE)
628 val = envmatch((uchar *)name, i);
632 /* found; copy out */
633 for (n = 0; n < len; ++n, ++buf) {
634 *buf = env_get_char(val++);
642 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
652 * Decode the integer value of an environment variable and return it.
654 * @param name Name of environemnt variable
655 * @param base Number base to use (normally 10, or 16 for hex)
656 * @param default_val Default value to return if the variable is not
658 * @return the decoded value, or default_val if not found
660 ulong getenv_ulong(const char *name, int base, ulong default_val)
663 * We can use getenv() here, even before relocation, since the
664 * environment variable value is an integer and thus short.
666 const char *str = getenv(name);
668 return str ? simple_strtoul(str, NULL, base) : default_val;
671 #ifndef CONFIG_SPL_BUILD
672 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
673 static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
676 printf("Saving Environment to %s...\n", env_name_spec);
678 return saveenv() ? 1 : 0;
682 saveenv, 1, 0, do_env_save,
683 "save environment variables to persistent storage",
687 #endif /* CONFIG_SPL_BUILD */
691 * Match a name / name=value pair
693 * s1 is either a simple 'name', or a 'name=value' pair.
694 * i2 is the environment index for a 'name2=value2' pair.
695 * If the names match, return the index for the value2, else -1.
697 int envmatch(uchar *s1, int i2)
702 while (*s1 == env_get_char(i2++))
706 if (*s1 == '\0' && env_get_char(i2-1) == '=')
712 #ifndef CONFIG_SPL_BUILD
713 static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
714 int argc, char * const argv[])
716 int all = 0, flag = 0;
718 debug("Initial value for argc=%d\n", argc);
719 while (--argc > 0 && **++argv == '-') {
724 case 'a': /* default all */
727 case 'f': /* force */
731 return cmd_usage(cmdtp);
735 debug("Final value for argc=%d\n", argc);
736 if (all && (argc == 0)) {
737 /* Reset the whole environment */
738 set_default_env("## Resetting to default environment\n");
741 if (!all && (argc > 0)) {
742 /* Reset individual variables */
743 set_default_vars(argc, argv);
747 return cmd_usage(cmdtp);
750 static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
751 int argc, char * const argv[])
753 int env_flag = H_INTERACTIVE;
756 debug("Initial value for argc=%d\n", argc);
757 while (argc > 1 && **(argv + 1) == '-') {
763 case 'f': /* force */
767 return CMD_RET_USAGE;
771 debug("Final value for argc=%d\n", argc);
776 char *name = *++argv;
778 if (!hdelete_r(name, &env_htab, env_flag))
785 #ifdef CONFIG_CMD_EXPORTENV
787 * env export [-t | -b | -c] [-s size] addr [var ...]
788 * -t: export as text format; if size is given, data will be
789 * padded with '\0' bytes; if not, one terminating '\0'
790 * will be added (which is included in the "filesize"
791 * setting so you can for exmple copy this to flash and
792 * keep the termination).
793 * -b: export as binary format (name=value pairs separated by
794 * '\0', list end marked by double "\0\0")
795 * -c: export as checksum protected environment format as
796 * used for example by "saveenv" command
798 * size of output buffer
799 * addr: memory address where environment gets stored
800 * var... List of variable names that get included into the
801 * export. Without arguments, the whole environment gets
804 * With "-c" and size is NOT given, then the export command will
805 * format the data as currently used for the persistent storage,
806 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
807 * prepend a valid CRC32 checksum and, in case of resundant
808 * environment, a "current" redundancy flag. If size is given, this
809 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
810 * checksum and redundancy flag will be inserted.
812 * With "-b" and "-t", always only the real data (including a
813 * terminating '\0' byte) will be written; here the optional size
814 * argument will be used to make sure not to overflow the user
815 * provided buffer; the command will abort if the size is not
816 * sufficient. Any remainign space will be '\0' padded.
818 * On successful return, the variable "filesize" will be set.
819 * Note that filesize includes the trailing/terminating '\0' byte(s).
821 * Usage szenario: create a text snapshot/backup of the current settings:
823 * => env export -t 100000
824 * => era ${backup_addr} +${filesize}
825 * => cp.b 100000 ${backup_addr} ${filesize}
827 * Re-import this snapshot, deleting all other settings:
829 * => env import -d -t ${backup_addr}
831 static int do_env_export(cmd_tbl_t *cmdtp, int flag,
832 int argc, char * const argv[])
835 char *addr, *cmd, *res;
845 while (--argc > 0 && **++argv == '-') {
849 case 'b': /* raw binary format */
854 case 'c': /* external checksum format */
860 case 's': /* size given */
862 return cmd_usage(cmdtp);
863 size = simple_strtoul(*++argv, NULL, 16);
865 case 't': /* text format */
871 return CMD_RET_USAGE;
878 return CMD_RET_USAGE;
880 addr = (char *)simple_strtoul(argv[0], NULL, 16);
883 memset(addr, '\0', size);
888 if (sep) { /* export as text file */
889 len = hexport_r(&env_htab, sep,
890 H_MATCH_KEY | H_MATCH_IDENT,
891 &addr, size, argc, argv);
893 error("Cannot export environment: errno = %d\n", errno);
896 sprintf(buf, "%zX", (size_t)len);
897 setenv("filesize", buf);
902 envp = (env_t *)addr;
904 if (chk) /* export as checksum protected block */
905 res = (char *)envp->data;
906 else /* export as raw binary data */
909 len = hexport_r(&env_htab, '\0',
910 H_MATCH_KEY | H_MATCH_IDENT,
911 &res, ENV_SIZE, argc, argv);
913 error("Cannot export environment: errno = %d\n", errno);
918 envp->crc = crc32(0, envp->data, ENV_SIZE);
919 #ifdef CONFIG_ENV_ADDR_REDUND
920 envp->flags = ACTIVE_FLAG;
923 setenv_hex("filesize", len + offsetof(env_t, data));
928 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
933 #ifdef CONFIG_CMD_IMPORTENV
935 * env import [-d] [-t | -b | -c] addr [size]
936 * -d: delete existing environment before importing;
937 * otherwise overwrite / append to existion definitions
938 * -t: assume text format; either "size" must be given or the
939 * text data must be '\0' terminated
940 * -b: assume binary format ('\0' separated, "\0\0" terminated)
941 * -c: assume checksum protected environment format
942 * addr: memory address to read from
943 * size: length of input data; if missing, proper '\0'
944 * termination is mandatory
946 static int do_env_import(cmd_tbl_t *cmdtp, int flag,
947 int argc, char * const argv[])
958 while (--argc > 0 && **++argv == '-') {
962 case 'b': /* raw binary format */
967 case 'c': /* external checksum format */
973 case 't': /* text format */
982 return CMD_RET_USAGE;
988 return CMD_RET_USAGE;
991 printf("## Warning: defaulting to text format\n");
993 addr = (char *)simple_strtoul(argv[0], NULL, 16);
996 size = simple_strtoul(argv[1], NULL, 16);
1002 while (size < MAX_ENV_SIZE) {
1003 if ((*s == sep) && (*(s+1) == '\0'))
1008 if (size == MAX_ENV_SIZE) {
1009 printf("## Warning: Input data exceeds %d bytes"
1010 " - truncated\n", MAX_ENV_SIZE);
1013 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
1018 env_t *ep = (env_t *)addr;
1020 size -= offsetof(env_t, data);
1021 memcpy(&crc, &ep->crc, sizeof(crc));
1023 if (crc32(0, ep->data, size) != crc) {
1024 puts("## Error: bad CRC, import failed\n");
1027 addr = (char *)ep->data;
1030 if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR,
1032 error("Environment import failed: errno = %d\n", errno);
1035 gd->flags |= GD_FLG_ENV_READY;
1040 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1047 * New command line interface: "env" command with subcommands
1049 static cmd_tbl_t cmd_env_sub[] = {
1050 #if defined(CONFIG_CMD_ASKENV)
1051 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
1053 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
1054 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
1055 #if defined(CONFIG_CMD_EDITENV)
1056 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
1058 #if defined(CONFIG_CMD_ENV_CALLBACK)
1059 U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
1061 #if defined(CONFIG_CMD_ENV_FLAGS)
1062 U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
1064 #if defined(CONFIG_CMD_EXPORTENV)
1065 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
1067 #if defined(CONFIG_CMD_GREPENV)
1068 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
1070 #if defined(CONFIG_CMD_IMPORTENV)
1071 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
1073 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
1074 #if defined(CONFIG_CMD_RUN)
1075 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
1077 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1078 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
1080 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
1083 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1084 void env_reloc(void)
1086 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1090 static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1095 return CMD_RET_USAGE;
1097 /* drop initial "env" arg */
1101 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1104 return cp->cmd(cmdtp, flag, argc, argv);
1106 return CMD_RET_USAGE;
1109 #ifdef CONFIG_SYS_LONGHELP
1110 static char env_help_text[] =
1111 #if defined(CONFIG_CMD_ASKENV)
1112 "ask name [message] [size] - ask for environment variable\nenv "
1114 #if defined(CONFIG_CMD_ENV_CALLBACK)
1115 "callbacks - print callbacks and their associated variables\nenv "
1117 "default [-f] -a - [forcibly] reset default environment\n"
1118 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1119 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
1120 #if defined(CONFIG_CMD_EDITENV)
1121 "env edit name - edit environment variable\n"
1123 #if defined(CONFIG_CMD_EXPORTENV)
1124 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1126 #if defined(CONFIG_CMD_ENV_FLAGS)
1127 "env flags - print variables that have non-default flags\n"
1129 #if defined(CONFIG_CMD_GREPENV)
1130 "env grep string [...] - search environment\n"
1132 #if defined(CONFIG_CMD_IMPORTENV)
1133 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1135 "env print [-a | name ...] - print environment\n"
1136 #if defined(CONFIG_CMD_RUN)
1137 "env run var [...] - run commands in an environment variable\n"
1139 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1140 "env save - save environment\n"
1142 "env set [-f] name [arg ...]\n";
1146 env, CONFIG_SYS_MAXARGS, 1, do_env,
1147 "environment handling commands", env_help_text
1151 * Old command line interface, kept for compatibility
1154 #if defined(CONFIG_CMD_EDITENV)
1155 U_BOOT_CMD_COMPLETE(
1156 editenv, 2, 0, do_env_edit,
1157 "edit environment variable",
1159 " - edit environment variable 'name'",
1164 U_BOOT_CMD_COMPLETE(
1165 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
1166 "print environment variables",
1167 "[-a]\n - print [all] values of all environment variables\n"
1168 "printenv name ...\n"
1169 " - print value of environment variable 'name'",
1173 #ifdef CONFIG_CMD_GREPENV
1174 U_BOOT_CMD_COMPLETE(
1175 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1176 "search environment variables",
1178 " - list environment name=value pairs matching 'string'",
1183 U_BOOT_CMD_COMPLETE(
1184 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
1185 "set environment variables",
1186 "[-f] name value ...\n"
1187 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1188 "setenv [-f] name\n"
1189 " - [forcibly] delete environment variable 'name'",
1193 #if defined(CONFIG_CMD_ASKENV)
1196 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
1197 "get environment variables from stdin",
1198 "name [message] [size]\n"
1199 " - get environment variable 'name' from stdin (max 'size' chars)"
1203 #if defined(CONFIG_CMD_RUN)
1204 U_BOOT_CMD_COMPLETE(
1205 run, CONFIG_SYS_MAXARGS, 1, do_run,
1206 "run commands in an environment variable",
1208 " - run the commands in the environment variable(s) 'var'",
1212 #endif /* CONFIG_SPL_BUILD */